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coverity appeasement - redundant check
[minix.git] / tools / m4 / bootstrap / tokenizer.c
blob80d0bc176901f6e232cb048d7d6c0bd521285a31
1 #if HAVE_NBTOOL_CONFIG_H
2 #include "nbtool_config.h"
3 #endif
4 #line 2 "tokenizer.c"
5
6 #line 4 "tokenizer.c"
7
8 #define YY_INT_ALIGNED short int
9
10 /* A lexical scanner generated by flex */
11
12 #define FLEX_SCANNER
13 #define YY_FLEX_MAJOR_VERSION 2
14 #define YY_FLEX_MINOR_VERSION 5
15 #define YY_FLEX_SUBMINOR_VERSION 35
16 #if YY_FLEX_SUBMINOR_VERSION > 0
17 #define FLEX_BETA
18 #endif
19
20 /* First, we deal with platform-specific or compiler-specific issues. */
21
22 /* begin standard C headers. */
23 #include <stdio.h>
24 #include <string.h>
25 #include <errno.h>
26 #include <stdlib.h>
27
28 /* end standard C headers. */
29
30 /* NetBSD: flexint.h,v 1.1.1.1 2009/10/26 00:26:19 christos Exp */
31
32 /* flex integer type definitions */
33
34 #ifndef FLEXINT_H
35 #define FLEXINT_H
36
37 /* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
38
39 #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
40
41 /* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
42 * if you want the limit (max/min) macros for int types.
43 */
44 #ifndef __STDC_LIMIT_MACROS
45 #define __STDC_LIMIT_MACROS 1
46 #endif
47
48 #include <inttypes.h>
49 typedef int8_t flex_int8_t;
50 typedef uint8_t flex_uint8_t;
51 typedef int16_t flex_int16_t;
52 typedef uint16_t flex_uint16_t;
53 typedef int32_t flex_int32_t;
54 typedef uint32_t flex_uint32_t;
55 #else
56 typedef signed char flex_int8_t;
57 typedef short int flex_int16_t;
58 typedef int flex_int32_t;
59 typedef unsigned char flex_uint8_t;
60 typedef unsigned short int flex_uint16_t;
61 typedef unsigned int flex_uint32_t;
62 #endif /* ! C99 */
63
64 /* Limits of integral types. */
65 #ifndef INT8_MIN
66 #define INT8_MIN (-128)
67 #endif
68 #ifndef INT16_MIN
69 #define INT16_MIN (-32767-1)
70 #endif
71 #ifndef INT32_MIN
72 #define INT32_MIN (-2147483647-1)
73 #endif
74 #ifndef INT8_MAX
75 #define INT8_MAX (127)
76 #endif
77 #ifndef INT16_MAX
78 #define INT16_MAX (32767)
79 #endif
80 #ifndef INT32_MAX
81 #define INT32_MAX (2147483647)
82 #endif
83 #ifndef UINT8_MAX
84 #define UINT8_MAX (255U)
85 #endif
86 #ifndef UINT16_MAX
87 #define UINT16_MAX (65535U)
88 #endif
89 #ifndef UINT32_MAX
90 #define UINT32_MAX (4294967295U)
91 #endif
92
93 #endif /* ! FLEXINT_H */
94
95 #ifdef __cplusplus
96
97 /* The "const" storage-class-modifier is valid. */
98 #define YY_USE_CONST
99
100 #else /* ! __cplusplus */
101
102 /* C99 requires __STDC__ to be defined as 1. */
103 #if defined (__STDC__)
104
105 #define YY_USE_CONST
106
107 #endif /* defined (__STDC__) */
108 #endif /* ! __cplusplus */
109
110 #ifdef YY_USE_CONST
111 #define yyconst const
112 #else
113 #define yyconst
114 #endif
115
116 /* Returned upon end-of-file. */
117 #define YY_NULL 0
118
119 /* Promotes a possibly negative, possibly signed char to an unsigned
120 * integer for use as an array index. If the signed char is negative,
121 * we want to instead treat it as an 8-bit unsigned char, hence the
122 * double cast.
123 */
124 #define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
125
126 /* Enter a start condition. This macro really ought to take a parameter,
127 * but we do it the disgusting crufty way forced on us by the ()-less
128 * definition of BEGIN.
129 */
130 #define BEGIN (yy_start) = 1 + 2 *
131
132 /* Translate the current start state into a value that can be later handed
133 * to BEGIN to return to the state. The YYSTATE alias is for lex
134 * compatibility.
135 */
136 #define YY_START (((yy_start) - 1) / 2)
137 #define YYSTATE YY_START
138
139 /* Action number for EOF rule of a given start state. */
140 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
141
142 /* Special action meaning "start processing a new file". */
143 #define YY_NEW_FILE yyrestart(yyin )
144
145 #define YY_END_OF_BUFFER_CHAR 0
146
147 /* Size of default input buffer. */
148 #ifndef YY_BUF_SIZE
149 #define YY_BUF_SIZE 16384
150 #endif
151
152 /* The state buf must be large enough to hold one state per character in the main buffer.
153 */
154 #define YY_STATE_BUF_SIZE ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))
155
156 #ifndef YY_TYPEDEF_YY_BUFFER_STATE
157 #define YY_TYPEDEF_YY_BUFFER_STATE
158 typedef struct yy_buffer_state *YY_BUFFER_STATE;
159 #endif
160
161 extern int yyleng;
162
163 extern FILE *yyin, *yyout;
164
165 #define EOB_ACT_CONTINUE_SCAN 0
166 #define EOB_ACT_END_OF_FILE 1
167 #define EOB_ACT_LAST_MATCH 2
168
169 #define YY_LESS_LINENO(n)
170
171 /* Return all but the first "n" matched characters back to the input stream. */
172 #define yyless(n) \
173 do \
174 { \
175 /* Undo effects of setting up yytext. */ \
176 int yyless_macro_arg = (n); \
177 YY_LESS_LINENO(yyless_macro_arg);\
178 *yy_cp = (yy_hold_char); \
179 YY_RESTORE_YY_MORE_OFFSET \
180 (yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
181 YY_DO_BEFORE_ACTION; /* set up yytext again */ \
182 } \
183 while ( 0 )
184
185 #define unput(c) yyunput( c, (yytext_ptr) )
186
187 #ifndef YY_TYPEDEF_YY_SIZE_T
188 #define YY_TYPEDEF_YY_SIZE_T
189 typedef size_t yy_size_t;
190 #endif
191
192 #ifndef YY_STRUCT_YY_BUFFER_STATE
193 #define YY_STRUCT_YY_BUFFER_STATE
194 struct yy_buffer_state
195 {
196 FILE *yy_input_file;
197
198 char *yy_ch_buf; /* input buffer */
199 char *yy_buf_pos; /* current position in input buffer */
200
201 /* Size of input buffer in bytes, not including room for EOB
202 * characters.
203 */
204 yy_size_t yy_buf_size;
205
206 /* Number of characters read into yy_ch_buf, not including EOB
207 * characters.
208 */
209 int yy_n_chars;
210
211 /* Whether we "own" the buffer - i.e., we know we created it,
212 * and can realloc() it to grow it, and should free() it to
213 * delete it.
214 */
215 int yy_is_our_buffer;
216
217 /* Whether this is an "interactive" input source; if so, and
218 * if we're using stdio for input, then we want to use getc()
219 * instead of fread(), to make sure we stop fetching input after
220 * each newline.
221 */
222 int yy_is_interactive;
223
224 /* Whether we're considered to be at the beginning of a line.
225 * If so, '^' rules will be active on the next match, otherwise
226 * not.
227 */
228 int yy_at_bol;
229
230 int yy_bs_lineno; /**< The line count. */
231 int yy_bs_column; /**< The column count. */
232
233 /* Whether to try to fill the input buffer when we reach the
234 * end of it.
235 */
236 int yy_fill_buffer;
237
238 int yy_buffer_status;
239
240 #define YY_BUFFER_NEW 0
241 #define YY_BUFFER_NORMAL 1
242 /* When an EOF's been seen but there's still some text to process
243 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
244 * shouldn't try reading from the input source any more. We might
245 * still have a bunch of tokens to match, though, because of
246 * possible backing-up.
247 *
248 * When we actually see the EOF, we change the status to "new"
249 * (via yyrestart()), so that the user can continue scanning by
250 * just pointing yyin at a new input file.
251 */
252 #define YY_BUFFER_EOF_PENDING 2
253
254 };
255 #endif /* !YY_STRUCT_YY_BUFFER_STATE */
256
257 /* Stack of input buffers. */
258 static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */
259 static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */
260 static YY_BUFFER_STATE * yy_buffer_stack = 0; /**< Stack as an array. */
261
262 /* We provide macros for accessing buffer states in case in the
263 * future we want to put the buffer states in a more general
264 * "scanner state".
265 *
266 * Returns the top of the stack, or NULL.
267 */
268 #define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
269 ? (yy_buffer_stack)[(yy_buffer_stack_top)] \
270 : NULL)
271
272 /* Same as previous macro, but useful when we know that the buffer stack is not
273 * NULL or when we need an lvalue. For internal use only.
274 */
275 #define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]
276
277 /* yy_hold_char holds the character lost when yytext is formed. */
278 static char yy_hold_char;
279 static int yy_n_chars; /* number of characters read into yy_ch_buf */
280 int yyleng;
281
282 /* Points to current character in buffer. */
283 static char *yy_c_buf_p = (char *) 0;
284 static int yy_init = 0; /* whether we need to initialize */
285 static int yy_start = 0; /* start state number */
286
287 /* Flag which is used to allow yywrap()'s to do buffer switches
288 * instead of setting up a fresh yyin. A bit of a hack ...
289 */
290 static int yy_did_buffer_switch_on_eof;
291
292 void yyrestart (FILE *input_file );
293 void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer );
294 YY_BUFFER_STATE yy_create_buffer (FILE *file,int size );
295 void yy_delete_buffer (YY_BUFFER_STATE b );
296 void yy_flush_buffer (YY_BUFFER_STATE b );
297 void yypush_buffer_state (YY_BUFFER_STATE new_buffer );
298 void yypop_buffer_state (void );
299
300 static void yyensure_buffer_stack (void );
301 static void yy_load_buffer_state (void );
302 static void yy_init_buffer (YY_BUFFER_STATE b,FILE *file );
303
304 #define YY_FLUSH_BUFFER yy_flush_buffer(YY_CURRENT_BUFFER )
305
306 YY_BUFFER_STATE yy_scan_buffer (char *base,yy_size_t size );
307 YY_BUFFER_STATE yy_scan_string (yyconst char *yy_str );
308 YY_BUFFER_STATE yy_scan_bytes (yyconst char *bytes,int len );
309
310 void *yyalloc (yy_size_t );
311 void *yyrealloc (void *,yy_size_t );
312 void yyfree (void * );
313
314 #define yy_new_buffer yy_create_buffer
315
316 #define yy_set_interactive(is_interactive) \
317 { \
318 if ( ! YY_CURRENT_BUFFER ){ \
319 yyensure_buffer_stack (); \
320 YY_CURRENT_BUFFER_LVALUE = \
321 yy_create_buffer(yyin,YY_BUF_SIZE ); \
322 } \
323 YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
324 }
325
326 #define yy_set_bol(at_bol) \
327 { \
328 if ( ! YY_CURRENT_BUFFER ){\
329 yyensure_buffer_stack (); \
330 YY_CURRENT_BUFFER_LVALUE = \
331 yy_create_buffer(yyin,YY_BUF_SIZE ); \
332 } \
333 YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
334 }
335
336 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
337
338 /* Begin user sect3 */
339
340 typedef unsigned char YY_CHAR;
341
342 FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
343
344 typedef int yy_state_type;
345
346 extern int yylineno;
347
348 int yylineno = 1;
349
350 extern char *yytext;
351 #define yytext_ptr yytext
352
353 static yy_state_type yy_get_previous_state (void );
354 static yy_state_type yy_try_NUL_trans (yy_state_type current_state );
355 static int yy_get_next_buffer (void );
356 static void yy_fatal_error (yyconst char msg[] );
357
358 /* Done after the current pattern has been matched and before the
359 * corresponding action - sets up yytext.
360 */
361 #define YY_DO_BEFORE_ACTION \
362 (yytext_ptr) = yy_bp; \
363 yyleng = (size_t) (yy_cp - yy_bp); \
364 (yy_hold_char) = *yy_cp; \
365 *yy_cp = '\0'; \
366 (yy_c_buf_p) = yy_cp;
367
368 #define YY_NUM_RULES 13
369 #define YY_END_OF_BUFFER 14
370 /* This struct is not used in this scanner,
371 but its presence is necessary. */
372 struct yy_trans_info
373 {
374 flex_int32_t yy_verify;
375 flex_int32_t yy_nxt;
376 };
377 static yyconst flex_int16_t yy_accept[33] =
378 { 0,
379 0, 0, 14, 12, 1, 1, 12, 12, 2, 2,
380 12, 12, 12, 12, 1, 9, 10, 2, 0, 0,
381 2, 6, 4, 8, 5, 7, 11, 0, 2, 0,
382 3, 0
383 } ;
384
385 static yyconst flex_int32_t yy_ec[256] =
386 { 0,
387 1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
388 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
389 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
390 1, 2, 4, 1, 1, 1, 1, 5, 1, 1,
391 1, 1, 1, 1, 1, 1, 1, 6, 7, 7,
392 7, 7, 7, 7, 7, 8, 8, 9, 1, 10,
393 11, 12, 1, 1, 13, 13, 13, 13, 13, 13,
394 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
395 14, 15, 14, 14, 14, 14, 14, 16, 14, 14,
396 1, 1, 1, 1, 1, 1, 13, 13, 13, 13,
397
398 13, 13, 14, 14, 14, 14, 14, 14, 14, 14,
399 14, 14, 14, 15, 14, 14, 14, 14, 14, 16,
400 14, 14, 1, 17, 1, 1, 1, 1, 1, 1,
401 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
402 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
403 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
404 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
405 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
406 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
407 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
408
409 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
410 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
411 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
412 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
413 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
414 1, 1, 1, 1, 1
415 } ;
416
417 static yyconst flex_int32_t yy_meta[18] =
418 { 0,
419 1, 1, 1, 1, 1, 2, 2, 2, 1, 1,
420 1, 1, 3, 4, 4, 4, 1
421 } ;
422
423 static yyconst flex_int16_t yy_base[37] =
424 { 0,
425 0, 0, 46, 47, 16, 18, 34, 39, 16, 0,
426 14, 32, 15, 25, 26, 47, 47, 27, 0, 0,
427 0, 47, 47, 47, 47, 47, 47, 32, 0, 0,
428 0, 47, 38, 28, 33, 35
429 } ;
430
431 static yyconst flex_int16_t yy_def[37] =
432 { 0,
433 32, 1, 32, 32, 32, 32, 32, 32, 32, 33,
434 32, 32, 32, 32, 32, 32, 32, 32, 34, 35,
435 33, 32, 32, 32, 32, 32, 32, 34, 35, 36,
436 36, 0, 32, 32, 32, 32
437 } ;
438
439 static yyconst flex_int16_t yy_nxt[65] =
440 { 0,
441 4, 5, 6, 7, 8, 9, 10, 10, 4, 11,
442 12, 13, 4, 4, 4, 4, 14, 15, 15, 15,
443 15, 18, 18, 22, 23, 25, 26, 15, 15, 28,
444 19, 20, 18, 18, 29, 29, 31, 31, 31, 21,
445 30, 27, 24, 17, 16, 32, 3, 32, 32, 32,
446 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
447 32, 32, 32, 32
448 } ;
449
450 static yyconst flex_int16_t yy_chk[65] =
451 { 0,
452 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
453 1, 1, 1, 1, 1, 1, 1, 5, 5, 6,
454 6, 9, 9, 11, 11, 13, 13, 15, 15, 34,
455 9, 9, 18, 18, 35, 35, 36, 36, 36, 33,
456 28, 14, 12, 8, 7, 3, 32, 32, 32, 32,
457 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
458 32, 32, 32, 32
459 } ;
460
461 static yy_state_type yy_last_accepting_state;
462 static char *yy_last_accepting_cpos;
463
464 extern int yy_flex_debug;
465 int yy_flex_debug = 0;
466
467 /* The intent behind this definition is that it'll catch
468 * any uses of REJECT which flex missed.
469 */
470 #define REJECT reject_used_but_not_detected
471 #define yymore() yymore_used_but_not_detected
472 #define YY_MORE_ADJ 0
473 #define YY_RESTORE_YY_MORE_OFFSET
474 char *yytext;
475 #line 1 "../../../usr.bin/m4/tokenizer.l"
476 #line 2 "../../../usr.bin/m4/tokenizer.l"
477 /* NetBSD: tokenizer.l,v 1.2 2009/10/26 21:11:28 christos Exp */
478 /* $OpenBSD: tokenizer.l,v 1.6 2008/08/21 21:00:14 espie Exp $ */
479 /*
480 * Copyright (c) 2004 Marc Espie <espie@cvs.openbsd.org>
481 *
482 * Permission to use, copy, modify, and distribute this software for any
483 * purpose with or without fee is hereby granted, provided that the above
484 * copyright notice and this permission notice appear in all copies.
485 *
486 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
487 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
488 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
489 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
490 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
491 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
492 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
493 */
494 #if HAVE_NBTOOL_CONFIG_H
495 #include "nbtool_config.h"
496 #endif
497 #include "parser.h"
498 __RCSID("NetBSD: tokenizer.l,v 1.2 2009/10/26 21:11:28 christos Exp ");
499 #include <stdlib.h>
500 #include <errno.h>
501 #include <stdint.h>
502 #include <limits.h>
503
504 extern int mimic_gnu;
505 extern int32_t yylval;
506 extern int yylex(void);
507 extern int yywrap(void);
508
509 int32_t number(void);
510 int32_t parse_radix(void);
511 #line 509 "tokenizer.c"
512
513 #define INITIAL 0
514
515 #ifndef YY_NO_UNISTD_H
516 /* Special case for "unistd.h", since it is non-ANSI. We include it way
517 * down here because we want the user's section 1 to have been scanned first.
518 * The user has a chance to override it with an option.
519 */
520 #include <unistd.h>
521 #endif
522
523 #ifndef YY_EXTRA_TYPE
524 #define YY_EXTRA_TYPE void *
525 #endif
526
527 static int yy_init_globals (void );
528
529 /* Accessor methods to globals.
530 These are made visible to non-reentrant scanners for convenience. */
531
532 int yylex_destroy (void );
533
534 int yyget_debug (void );
535
536 void yyset_debug (int debug_flag );
537
538 YY_EXTRA_TYPE yyget_extra (void );
539
540 void yyset_extra (YY_EXTRA_TYPE user_defined );
541
542 FILE *yyget_in (void );
543
544 void yyset_in (FILE * in_str );
545
546 FILE *yyget_out (void );
547
548 void yyset_out (FILE * out_str );
549
550 int yyget_leng (void );
551
552 char *yyget_text (void );
553
554 int yyget_lineno (void );
555
556 void yyset_lineno (int line_number );
557
558 /* Macros after this point can all be overridden by user definitions in
559 * section 1.
560 */
561
562 #ifndef YY_SKIP_YYWRAP
563 #ifdef __cplusplus
564 extern "C" int yywrap (void );
565 #else
566 extern int yywrap (void );
567 #endif
568 #endif
569
570 #ifndef YY_NO_UNPUT
571
572 static void yyunput (int c,char *buf_ptr );
573
574 #endif
575
576 #ifndef yytext_ptr
577 static void yy_flex_strncpy (char *,yyconst char *,int );
578 #endif
579
580 #ifdef YY_NEED_STRLEN
581 static int yy_flex_strlen (yyconst char * );
582 #endif
583
584 #ifndef YY_NO_INPUT
585
586 #ifdef __cplusplus
587 static int yyinput (void );
588 #else
589 static int input (void );
590 #endif
591
592 #endif
593
594 /* Amount of stuff to slurp up with each read. */
595 #ifndef YY_READ_BUF_SIZE
596 #define YY_READ_BUF_SIZE 8192
597 #endif
598
599 /* Copy whatever the last rule matched to the standard output. */
600 #ifndef ECHO
601 /* This used to be an fputs(), but since the string might contain NUL's,
602 * we now use fwrite().
603 */
604 #define ECHO fwrite( yytext, yyleng, 1, yyout )
605 #endif
606
607 /* Gets input and stuffs it into "buf". number of characters read, or YY_NULL,
608 * is returned in "result".
609 */
610 #ifndef YY_INPUT
611 #define YY_INPUT(buf,result,max_size) \
612 if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
613 { \
614 int c = '*'; \
615 size_t n; \
616 for ( n = 0; n < max_size && \
617 (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
618 buf[n] = (char) c; \
619 if ( c == '\n' ) \
620 buf[n++] = (char) c; \
621 if ( c == EOF && ferror( yyin ) ) \
622 YY_FATAL_ERROR( "input in flex scanner failed" ); \
623 result = n; \
624 } \
625 else \
626 { \
627 errno=0; \
628 while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
629 { \
630 if( errno != EINTR) \
631 { \
632 YY_FATAL_ERROR( "input in flex scanner failed" ); \
633 break; \
634 } \
635 errno=0; \
636 clearerr(yyin); \
637 } \
638 }\
639 \
640
641 #endif
642
643 /* No semi-colon after return; correct usage is to write "yyterminate();" -
644 * we don't want an extra ';' after the "return" because that will cause
645 * some compilers to complain about unreachable statements.
646 */
647 #ifndef yyterminate
648 #define yyterminate() return YY_NULL
649 #endif
650
651 /* Number of entries by which start-condition stack grows. */
652 #ifndef YY_START_STACK_INCR
653 #define YY_START_STACK_INCR 25
654 #endif
655
656 /* Report a fatal error. */
657 #ifndef YY_FATAL_ERROR
658 #define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
659 #endif
660
661 /* end tables serialization structures and prototypes */
662
663 /* Default declaration of generated scanner - a define so the user can
664 * easily add parameters.
665 */
666 #ifndef YY_DECL
667 #define YY_DECL_IS_OURS 1
668
669 extern int yylex (void);
670
671 #define YY_DECL int yylex (void)
672 #endif /* !YY_DECL */
673
674 /* Code executed at the beginning of each rule, after yytext and yyleng
675 * have been set up.
676 */
677 #ifndef YY_USER_ACTION
678 #define YY_USER_ACTION
679 #endif
680
681 /* Code executed at the end of each rule. */
682 #ifndef YY_BREAK
683 #define YY_BREAK break;
684 #endif
685
686 #define YY_RULE_SETUP \
687 YY_USER_ACTION
688
689 /** The main scanner function which does all the work.
690 */
691 YY_DECL
692 {
693 register yy_state_type yy_current_state;
694 register char *yy_cp, *yy_bp;
695 register int yy_act;
696
697 #line 45 "../../../usr.bin/m4/tokenizer.l"
698
699 #line 697 "tokenizer.c"
700
701 if ( !(yy_init) )
702 {
703 (yy_init) = 1;
704
705 #ifdef YY_USER_INIT
706 YY_USER_INIT;
707 #endif
708
709 if ( ! (yy_start) )
710 (yy_start) = 1; /* first start state */
711
712 if ( ! yyin )
713 yyin = stdin;
714
715 if ( ! yyout )
716 yyout = stdout;
717
718 if ( ! YY_CURRENT_BUFFER ) {
719 yyensure_buffer_stack ();
720 YY_CURRENT_BUFFER_LVALUE =
721 yy_create_buffer(yyin,YY_BUF_SIZE );
722 }
723
724 yy_load_buffer_state( );
725 }
726
727 while ( 1 ) /* loops until end-of-file is reached */
728 {
729 yy_cp = (yy_c_buf_p);
730
731 /* Support of yytext. */
732 *yy_cp = (yy_hold_char);
733
734 /* yy_bp points to the position in yy_ch_buf of the start of
735 * the current run.
736 */
737 yy_bp = yy_cp;
738
739 yy_current_state = (yy_start);
740 yy_match:
741 do
742 {
743 register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
744 if ( yy_accept[yy_current_state] )
745 {
746 (yy_last_accepting_state) = yy_current_state;
747 (yy_last_accepting_cpos) = yy_cp;
748 }
749 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
750 {
751 yy_current_state = (int) yy_def[yy_current_state];
752 if ( yy_current_state >= 33 )
753 yy_c = yy_meta[(unsigned int) yy_c];
754 }
755 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
756 ++yy_cp;
757 }
758 while ( yy_base[yy_current_state] != 47 );
759
760 yy_find_action:
761 yy_act = yy_accept[yy_current_state];
762 if ( yy_act == 0 )
763 { /* have to back up */
764 yy_cp = (yy_last_accepting_cpos);
765 yy_current_state = (yy_last_accepting_state);
766 yy_act = yy_accept[yy_current_state];
767 }
768
769 YY_DO_BEFORE_ACTION;
770
771 do_action: /* This label is used only to access EOF actions. */
772
773 switch ( yy_act )
774 { /* beginning of action switch */
775 case 0: /* must back up */
776 /* undo the effects of YY_DO_BEFORE_ACTION */
777 *yy_cp = (yy_hold_char);
778 yy_cp = (yy_last_accepting_cpos);
779 yy_current_state = (yy_last_accepting_state);
780 goto yy_find_action;
781
782 case 1:
783 /* rule 1 can match eol */
784 YY_RULE_SETUP
785 #line 46 "../../../usr.bin/m4/tokenizer.l"
786 {/* just skip it */}
787 YY_BREAK
788 case 2:
789 YY_RULE_SETUP
790 #line 47 "../../../usr.bin/m4/tokenizer.l"
791 { yylval = number(); return(NUMBER); }
792 YY_BREAK
793 case 3:
794 YY_RULE_SETUP
795 #line 48 "../../../usr.bin/m4/tokenizer.l"
796 { if (mimic_gnu) {
797 yylval = parse_radix(); return(NUMBER);
798 } else {
799 return(ERROR);
800 }
801 }
802 YY_BREAK
803 case 4:
804 YY_RULE_SETUP
805 #line 54 "../../../usr.bin/m4/tokenizer.l"
806 { return(LE); }
807 YY_BREAK
808 case 5:
809 YY_RULE_SETUP
810 #line 55 "../../../usr.bin/m4/tokenizer.l"
811 { return(GE); }
812 YY_BREAK
813 case 6:
814 YY_RULE_SETUP
815 #line 56 "../../../usr.bin/m4/tokenizer.l"
816 { return(LSHIFT); }
817 YY_BREAK
818 case 7:
819 YY_RULE_SETUP
820 #line 57 "../../../usr.bin/m4/tokenizer.l"
821 { return(RSHIFT); }
822 YY_BREAK
823 case 8:
824 YY_RULE_SETUP
825 #line 58 "../../../usr.bin/m4/tokenizer.l"
826 { return(EQ); }
827 YY_BREAK
828 case 9:
829 YY_RULE_SETUP
830 #line 59 "../../../usr.bin/m4/tokenizer.l"
831 { return(NE); }
832 YY_BREAK
833 case 10:
834 YY_RULE_SETUP
835 #line 60 "../../../usr.bin/m4/tokenizer.l"
836 { return(LAND); }
837 YY_BREAK
838 case 11:
839 YY_RULE_SETUP
840 #line 61 "../../../usr.bin/m4/tokenizer.l"
841 { return(LOR); }
842 YY_BREAK
843 case 12:
844 YY_RULE_SETUP
845 #line 62 "../../../usr.bin/m4/tokenizer.l"
846 { return yytext[0]; }
847 YY_BREAK
848 case 13:
849 YY_RULE_SETUP
850 #line 63 "../../../usr.bin/m4/tokenizer.l"
851 ECHO;
852 YY_BREAK
853 #line 851 "tokenizer.c"
854 case YY_STATE_EOF(INITIAL):
855 yyterminate();
856
857 case YY_END_OF_BUFFER:
858 {
859 /* Amount of text matched not including the EOB char. */
860 int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1;
861
862 /* Undo the effects of YY_DO_BEFORE_ACTION. */
863 *yy_cp = (yy_hold_char);
864 YY_RESTORE_YY_MORE_OFFSET
865
866 if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
867 {
868 /* We're scanning a new file or input source. It's
869 * possible that this happened because the user
870 * just pointed yyin at a new source and called
871 * yylex(). If so, then we have to assure
872 * consistency between YY_CURRENT_BUFFER and our
873 * globals. Here is the right place to do so, because
874 * this is the first action (other than possibly a
875 * back-up) that will match for the new input source.
876 */
877 (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
878 YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
879 YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
880 }
881
882 /* Note that here we test for yy_c_buf_p "<=" to the position
883 * of the first EOB in the buffer, since yy_c_buf_p will
884 * already have been incremented past the NUL character
885 * (since all states make transitions on EOB to the
886 * end-of-buffer state). Contrast this with the test
887 * in input().
888 */
889 if ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
890 { /* This was really a NUL. */
891 yy_state_type yy_next_state;
892
893 (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text;
894
895 yy_current_state = yy_get_previous_state( );
896
897 /* Okay, we're now positioned to make the NUL
898 * transition. We couldn't have
899 * yy_get_previous_state() go ahead and do it
900 * for us because it doesn't know how to deal
901 * with the possibility of jamming (and we don't
902 * want to build jamming into it because then it
903 * will run more slowly).
904 */
905
906 yy_next_state = yy_try_NUL_trans( yy_current_state );
907
908 yy_bp = (yytext_ptr) + YY_MORE_ADJ;
909
910 if ( yy_next_state )
911 {
912 /* Consume the NUL. */
913 yy_cp = ++(yy_c_buf_p);
914 yy_current_state = yy_next_state;
915 goto yy_match;
916 }
917
918 else
919 {
920 yy_cp = (yy_c_buf_p);
921 goto yy_find_action;
922 }
923 }
924
925 else switch ( yy_get_next_buffer( ) )
926 {
927 case EOB_ACT_END_OF_FILE:
928 {
929 (yy_did_buffer_switch_on_eof) = 0;
930
931 if ( yywrap( ) )
932 {
933 /* Note: because we've taken care in
934 * yy_get_next_buffer() to have set up
935 * yytext, we can now set up
936 * yy_c_buf_p so that if some total
937 * hoser (like flex itself) wants to
938 * call the scanner after we return the
939 * YY_NULL, it'll still work - another
940 * YY_NULL will get returned.
941 */
942 (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ;
943
944 yy_act = YY_STATE_EOF(YY_START);
945 goto do_action;
946 }
947
948 else
949 {
950 if ( ! (yy_did_buffer_switch_on_eof) )
951 YY_NEW_FILE;
952 }
953 break;
954 }
955
956 case EOB_ACT_CONTINUE_SCAN:
957 (yy_c_buf_p) =
958 (yytext_ptr) + yy_amount_of_matched_text;
959
960 yy_current_state = yy_get_previous_state( );
961
962 yy_cp = (yy_c_buf_p);
963 yy_bp = (yytext_ptr) + YY_MORE_ADJ;
964 goto yy_match;
965
966 case EOB_ACT_LAST_MATCH:
967 (yy_c_buf_p) =
968 &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)];
969
970 yy_current_state = yy_get_previous_state( );
971
972 yy_cp = (yy_c_buf_p);
973 yy_bp = (yytext_ptr) + YY_MORE_ADJ;
974 goto yy_find_action;
975 }
976 break;
977 }
978
979 default:
980 YY_FATAL_ERROR(
981 "fatal flex scanner internal error--no action found" );
982 } /* end of action switch */
983 } /* end of scanning one token */
984 } /* end of yylex */
985
986 /* yy_get_next_buffer - try to read in a new buffer
987 *
988 * Returns a code representing an action:
989 * EOB_ACT_LAST_MATCH -
990 * EOB_ACT_CONTINUE_SCAN - continue scanning from current position
991 * EOB_ACT_END_OF_FILE - end of file
992 */
993 static int yy_get_next_buffer (void)
994 {
995 register char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
996 register char *source = (yytext_ptr);
997 register int number_to_move, i;
998 int ret_val;
999
1000 if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] )
1001 YY_FATAL_ERROR(
1002 "fatal flex scanner internal error--end of buffer missed" );
1003
1004 if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
1005 { /* Don't try to fill the buffer, so this is an EOF. */
1006 if ( (yy_c_buf_p) - (yytext_ptr) - YY_MORE_ADJ == 1 )
1007 {
1008 /* We matched a single character, the EOB, so
1009 * treat this as a final EOF.
1010 */
1011 return EOB_ACT_END_OF_FILE;
1012 }
1013
1014 else
1015 {
1016 /* We matched some text prior to the EOB, first
1017 * process it.
1018 */
1019 return EOB_ACT_LAST_MATCH;
1020 }
1021 }
1022
1023 /* Try to read more data. */
1024
1025 /* First move last chars to start of buffer. */
1026 number_to_move = (int) ((yy_c_buf_p) - (yytext_ptr)) - 1;
1027
1028 for ( i = 0; i < number_to_move; ++i )
1029 *(dest++) = *(source++);
1030
1031 if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
1032 /* don't do the read, it's not guaranteed to return an EOF,
1033 * just force an EOF
1034 */
1035 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0;
1036
1037 else
1038 {
1039 int num_to_read =
1040 YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
1041
1042 while ( num_to_read <= 0 )
1043 { /* Not enough room in the buffer - grow it. */
1044
1045 /* just a shorter name for the current buffer */
1046 YY_BUFFER_STATE b = YY_CURRENT_BUFFER;
1047
1048 int yy_c_buf_p_offset =
1049 (int) ((yy_c_buf_p) - b->yy_ch_buf);
1050
1051 if ( b->yy_is_our_buffer )
1052 {
1053 int new_size = b->yy_buf_size * 2;
1054
1055 if ( new_size <= 0 )
1056 b->yy_buf_size += b->yy_buf_size / 8;
1057 else
1058 b->yy_buf_size *= 2;
1059
1060 b->yy_ch_buf = (char *)
1061 /* Include room in for 2 EOB chars. */
1062 yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 );
1063 }
1064 else
1065 /* Can't grow it, we don't own it. */
1066 b->yy_ch_buf = 0;
1067
1068 if ( ! b->yy_ch_buf )
1069 YY_FATAL_ERROR(
1070 "fatal error - scanner input buffer overflow" );
1071
1072 (yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset];
1073
1074 num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
1075 number_to_move - 1;
1076
1077 }
1078
1079 if ( num_to_read > YY_READ_BUF_SIZE )
1080 num_to_read = YY_READ_BUF_SIZE;
1081
1082 /* Read in more data. */
1083 YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
1084 (yy_n_chars), (size_t) num_to_read );
1085
1086 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
1087 }
1088
1089 if ( (yy_n_chars) == 0 )
1090 {
1091 if ( number_to_move == YY_MORE_ADJ )
1092 {
1093 ret_val = EOB_ACT_END_OF_FILE;
1094 yyrestart(yyin );
1095 }
1096
1097 else
1098 {
1099 ret_val = EOB_ACT_LAST_MATCH;
1100 YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
1101 YY_BUFFER_EOF_PENDING;
1102 }
1103 }
1104
1105 else
1106 ret_val = EOB_ACT_CONTINUE_SCAN;
1107
1108 if ((yy_size_t) ((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
1109 /* Extend the array by 50%, plus the number we really need. */
1110 yy_size_t new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1);
1111 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size );
1112 if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
1113 YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
1114 }
1115
1116 (yy_n_chars) += number_to_move;
1117 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR;
1118 YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR;
1119
1120 (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0];
1121
1122 return ret_val;
1123 }
1124
1125 /* yy_get_previous_state - get the state just before the EOB char was reached */
1126
1127 static yy_state_type yy_get_previous_state (void)
1128 {
1129 register yy_state_type yy_current_state;
1130 register char *yy_cp;
1131
1132 yy_current_state = (yy_start);
1133
1134 for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp )
1135 {
1136 register YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
1137 if ( yy_accept[yy_current_state] )
1138 {
1139 (yy_last_accepting_state) = yy_current_state;
1140 (yy_last_accepting_cpos) = yy_cp;
1141 }
1142 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
1143 {
1144 yy_current_state = (int) yy_def[yy_current_state];
1145 if ( yy_current_state >= 33 )
1146 yy_c = yy_meta[(unsigned int) yy_c];
1147 }
1148 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
1149 }
1150
1151 return yy_current_state;
1152 }
1153
1154 /* yy_try_NUL_trans - try to make a transition on the NUL character
1155 *
1156 * synopsis
1157 * next_state = yy_try_NUL_trans( current_state );
1158 */
1159 static yy_state_type yy_try_NUL_trans (yy_state_type yy_current_state )
1160 {
1161 register int yy_is_jam;
1162 register char *yy_cp = (yy_c_buf_p);
1163
1164 register YY_CHAR yy_c = 1;
1165 if ( yy_accept[yy_current_state] )
1166 {
1167 (yy_last_accepting_state) = yy_current_state;
1168 (yy_last_accepting_cpos) = yy_cp;
1169 }
1170 while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
1171 {
1172 yy_current_state = (int) yy_def[yy_current_state];
1173 if ( yy_current_state >= 33 )
1174 yy_c = yy_meta[(unsigned int) yy_c];
1175 }
1176 yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
1177 yy_is_jam = (yy_current_state == 32);
1178
1179 return yy_is_jam ? 0 : yy_current_state;
1180 }
1181
1182 #ifndef YY_NO_UNPUT
1183
1184 static void yyunput (int c, register char * yy_bp )
1185 {
1186 register char *yy_cp;
1187
1188 yy_cp = (yy_c_buf_p);
1189
1190 /* undo effects of setting up yytext */
1191 *yy_cp = (yy_hold_char);
1192
1193 if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
1194 { /* need to shift things up to make room */
1195 /* +2 for EOB chars. */
1196 register int number_to_move = (yy_n_chars) + 2;
1197 register char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[
1198 YY_CURRENT_BUFFER_LVALUE->yy_buf_size + 2];
1199 register char *source =
1200 &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move];
1201
1202 while ( source > YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
1203 *--dest = *--source;
1204
1205 yy_cp += (int) (dest - source);
1206 yy_bp += (int) (dest - source);
1207 YY_CURRENT_BUFFER_LVALUE->yy_n_chars =
1208 (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_buf_size;
1209
1210 if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
1211 YY_FATAL_ERROR( "flex scanner push-back overflow" );
1212 }
1213
1214 *--yy_cp = (char) c;
1215
1216 (yytext_ptr) = yy_bp;
1217 (yy_hold_char) = *yy_cp;
1218 (yy_c_buf_p) = yy_cp;
1219 }
1220
1221 #endif
1222
1223 #ifndef YY_NO_INPUT
1224 #ifdef __cplusplus
1225 static int yyinput (void)
1226 #else
1227 static int input (void)
1228 #endif
1229
1230 {
1231 int c;
1232
1233 *(yy_c_buf_p) = (yy_hold_char);
1234
1235 if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR )
1236 {
1237 /* yy_c_buf_p now points to the character we want to return.
1238 * If this occurs *before* the EOB characters, then it's a
1239 * valid NUL; if not, then we've hit the end of the buffer.
1240 */
1241 if ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
1242 /* This was really a NUL. */
1243 *(yy_c_buf_p) = '\0';
1244
1245 else
1246 { /* need more input */
1247 int offset = (yy_c_buf_p) - (yytext_ptr);
1248 ++(yy_c_buf_p);
1249
1250 switch ( yy_get_next_buffer( ) )
1251 {
1252 case EOB_ACT_LAST_MATCH:
1253 /* This happens because yy_g_n_b()
1254 * sees that we've accumulated a
1255 * token and flags that we need to
1256 * try matching the token before
1257 * proceeding. But for input(),
1258 * there's no matching to consider.
1259 * So convert the EOB_ACT_LAST_MATCH
1260 * to EOB_ACT_END_OF_FILE.
1261 */
1262
1263 /* Reset buffer status. */
1264 yyrestart(yyin );
1265
1266 /*FALLTHROUGH*/
1267
1268 case EOB_ACT_END_OF_FILE:
1269 {
1270 if ( yywrap( ) )
1271 return EOF;
1272
1273 if ( ! (yy_did_buffer_switch_on_eof) )
1274 YY_NEW_FILE;
1275 #ifdef __cplusplus
1276 return yyinput();
1277 #else
1278 return input();
1279 #endif
1280 }
1281
1282 case EOB_ACT_CONTINUE_SCAN:
1283 (yy_c_buf_p) = (yytext_ptr) + offset;
1284 break;
1285 }
1286 }
1287 }
1288
1289 c = *(unsigned char *) (yy_c_buf_p); /* cast for 8-bit char's */
1290 *(yy_c_buf_p) = '\0'; /* preserve yytext */
1291 (yy_hold_char) = *++(yy_c_buf_p);
1292
1293 return c;
1294 }
1295 #endif /* ifndef YY_NO_INPUT */
1296
1297 /** Immediately switch to a different input stream.
1298 * @param input_file A readable stream.
1299 *
1300 * @note This function does not reset the start condition to @c INITIAL .
1301 */
1302 void yyrestart (FILE * input_file )
1303 {
1304
1305 if ( ! YY_CURRENT_BUFFER ){
1306 yyensure_buffer_stack ();
1307 YY_CURRENT_BUFFER_LVALUE =
1308 yy_create_buffer(yyin,YY_BUF_SIZE );
1309 }
1310
1311 yy_init_buffer(YY_CURRENT_BUFFER,input_file );
1312 yy_load_buffer_state( );
1313 }
1314
1315 /** Switch to a different input buffer.
1316 * @param new_buffer The new input buffer.
1317 *
1318 */
1319 void yy_switch_to_buffer (YY_BUFFER_STATE new_buffer )
1320 {
1321
1322 /* TODO. We should be able to replace this entire function body
1323 * with
1324 * yypop_buffer_state();
1325 * yypush_buffer_state(new_buffer);
1326 */
1327 yyensure_buffer_stack ();
1328 if ( YY_CURRENT_BUFFER == new_buffer )
1329 return;
1330
1331 if ( YY_CURRENT_BUFFER )
1332 {
1333 /* Flush out information for old buffer. */
1334 *(yy_c_buf_p) = (yy_hold_char);
1335 YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
1336 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
1337 }
1338
1339 YY_CURRENT_BUFFER_LVALUE = new_buffer;
1340 yy_load_buffer_state( );
1341
1342 /* We don't actually know whether we did this switch during
1343 * EOF (yywrap()) processing, but the only time this flag
1344 * is looked at is after yywrap() is called, so it's safe
1345 * to go ahead and always set it.
1346 */
1347 (yy_did_buffer_switch_on_eof) = 1;
1348 }
1349
1350 static void yy_load_buffer_state (void)
1351 {
1352 (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
1353 (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
1354 yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
1355 (yy_hold_char) = *(yy_c_buf_p);
1356 }
1357
1358 /** Allocate and initialize an input buffer state.
1359 * @param file A readable stream.
1360 * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
1361 *
1362 * @return the allocated buffer state.
1363 */
1364 YY_BUFFER_STATE yy_create_buffer (FILE * file, int size )
1365 {
1366 YY_BUFFER_STATE b;
1367
1368 b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) );
1369 if ( ! b )
1370 YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
1371
1372 b->yy_buf_size = size;
1373
1374 /* yy_ch_buf has to be 2 characters longer than the size given because
1375 * we need to put in 2 end-of-buffer characters.
1376 */
1377 b->yy_ch_buf = (char *) yyalloc(b->yy_buf_size + 2 );
1378 if ( ! b->yy_ch_buf )
1379 YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
1380
1381 b->yy_is_our_buffer = 1;
1382
1383 yy_init_buffer(b,file );
1384
1385 return b;
1386 }
1387
1388 /** Destroy the buffer.
1389 * @param b a buffer created with yy_create_buffer()
1390 *
1391 */
1392 void yy_delete_buffer (YY_BUFFER_STATE b )
1393 {
1394
1395 if ( ! b )
1396 return;
1397
1398 if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
1399 YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
1400
1401 if ( b->yy_is_our_buffer )
1402 yyfree((void *) b->yy_ch_buf );
1403
1404 yyfree((void *) b );
1405 }
1406
1407 #ifndef __cplusplus
1408 extern int isatty (int );
1409 #endif /* __cplusplus */
1410
1411 /* Initializes or reinitializes a buffer.
1412 * This function is sometimes called more than once on the same buffer,
1413 * such as during a yyrestart() or at EOF.
1414 */
1415 static void yy_init_buffer (YY_BUFFER_STATE b, FILE * file )
1416
1417 {
1418 int oerrno = errno;
1419
1420 yy_flush_buffer(b );
1421
1422 b->yy_input_file = file;
1423 b->yy_fill_buffer = 1;
1424
1425 /* If b is the current buffer, then yy_init_buffer was _probably_
1426 * called from yyrestart() or through yy_get_next_buffer.
1427 * In that case, we don't want to reset the lineno or column.
1428 */
1429 if (b != YY_CURRENT_BUFFER){
1430 b->yy_bs_lineno = 1;
1431 b->yy_bs_column = 0;
1432 }
1433
1434 b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
1435
1436 errno = oerrno;
1437 }
1438
1439 /** Discard all buffered characters. On the next scan, YY_INPUT will be called.
1440 * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
1441 *
1442 */
1443 void yy_flush_buffer (YY_BUFFER_STATE b )
1444 {
1445 if ( ! b )
1446 return;
1447
1448 b->yy_n_chars = 0;
1449
1450 /* We always need two end-of-buffer characters. The first causes
1451 * a transition to the end-of-buffer state. The second causes
1452 * a jam in that state.
1453 */
1454 b->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
1455 b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;
1456
1457 b->yy_buf_pos = &b->yy_ch_buf[0];
1458
1459 b->yy_at_bol = 1;
1460 b->yy_buffer_status = YY_BUFFER_NEW;
1461
1462 if ( b == YY_CURRENT_BUFFER )
1463 yy_load_buffer_state( );
1464 }
1465
1466 /** Pushes the new state onto the stack. The new state becomes
1467 * the current state. This function will allocate the stack
1468 * if necessary.
1469 * @param new_buffer The new state.
1470 *
1471 */
1472 void yypush_buffer_state (YY_BUFFER_STATE new_buffer )
1473 {
1474 if (new_buffer == NULL)
1475 return;
1476
1477 yyensure_buffer_stack();
1478
1479 /* This block is copied from yy_switch_to_buffer. */
1480 if ( YY_CURRENT_BUFFER )
1481 {
1482 /* Flush out information for old buffer. */
1483 *(yy_c_buf_p) = (yy_hold_char);
1484 YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
1485 YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
1486 }
1487
1488 /* Only push if top exists. Otherwise, replace top. */
1489 if (YY_CURRENT_BUFFER)
1490 (yy_buffer_stack_top)++;
1491 YY_CURRENT_BUFFER_LVALUE = new_buffer;
1492
1493 /* copied from yy_switch_to_buffer. */
1494 yy_load_buffer_state( );
1495 (yy_did_buffer_switch_on_eof) = 1;
1496 }
1497
1498 /** Removes and deletes the top of the stack, if present.
1499 * The next element becomes the new top.
1500 *
1501 */
1502 void yypop_buffer_state (void)
1503 {
1504 if (!YY_CURRENT_BUFFER)
1505 return;
1506
1507 yy_delete_buffer(YY_CURRENT_BUFFER );
1508 YY_CURRENT_BUFFER_LVALUE = NULL;
1509 if ((yy_buffer_stack_top) > 0)
1510 --(yy_buffer_stack_top);
1511
1512 if (YY_CURRENT_BUFFER) {
1513 yy_load_buffer_state( );
1514 (yy_did_buffer_switch_on_eof) = 1;
1515 }
1516 }
1517
1518 /* Allocates the stack if it does not exist.
1519 * Guarantees space for at least one push.
1520 */
1521 static void yyensure_buffer_stack (void)
1522 {
1523 int num_to_alloc;
1524
1525 if (!(yy_buffer_stack)) {
1526
1527 /* First allocation is just for 2 elements, since we don't know if this
1528 * scanner will even need a stack. We use 2 instead of 1 to avoid an
1529 * immediate realloc on the next call.
1530 */
1531 num_to_alloc = 1;
1532 (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
1533 (num_to_alloc * sizeof(struct yy_buffer_state*)
1534 );
1535 if ( ! (yy_buffer_stack) )
1536 YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
1537
1538 memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));
1539
1540 (yy_buffer_stack_max) = num_to_alloc;
1541 (yy_buffer_stack_top) = 0;
1542 return;
1543 }
1544
1545 if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){
1546
1547 /* Increase the buffer to prepare for a possible push. */
1548 int grow_size = 8 /* arbitrary grow size */;
1549
1550 num_to_alloc = (yy_buffer_stack_max) + grow_size;
1551 (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
1552 ((yy_buffer_stack),
1553 num_to_alloc * sizeof(struct yy_buffer_state*)
1554 );
1555 if ( ! (yy_buffer_stack) )
1556 YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
1557
1558 /* zero only the new slots.*/
1559 memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*));
1560 (yy_buffer_stack_max) = num_to_alloc;
1561 }
1562 }
1563
1564 /** Setup the input buffer state to scan directly from a user-specified character buffer.
1565 * @param base the character buffer
1566 * @param size the size in bytes of the character buffer
1567 *
1568 * @return the newly allocated buffer state object.
1569 */
1570 YY_BUFFER_STATE yy_scan_buffer (char * base, yy_size_t size )
1571 {
1572 YY_BUFFER_STATE b;
1573
1574 if ( size < 2 ||
1575 base[size-2] != YY_END_OF_BUFFER_CHAR ||
1576 base[size-1] != YY_END_OF_BUFFER_CHAR )
1577 /* They forgot to leave room for the EOB's. */
1578 return 0;
1579
1580 b = (YY_BUFFER_STATE) yyalloc(sizeof( struct yy_buffer_state ) );
1581 if ( ! b )
1582 YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
1583
1584 b->yy_buf_size = size - 2; /* "- 2" to take care of EOB's */
1585 b->yy_buf_pos = b->yy_ch_buf = base;
1586 b->yy_is_our_buffer = 0;
1587 b->yy_input_file = 0;
1588 b->yy_n_chars = b->yy_buf_size;
1589 b->yy_is_interactive = 0;
1590 b->yy_at_bol = 1;
1591 b->yy_fill_buffer = 0;
1592 b->yy_buffer_status = YY_BUFFER_NEW;
1593
1594 yy_switch_to_buffer(b );
1595
1596 return b;
1597 }
1598
1599 /** Setup the input buffer state to scan a string. The next call to yylex() will
1600 * scan from a @e copy of @a str.
1601 * @param yystr a NUL-terminated string to scan
1602 *
1603 * @return the newly allocated buffer state object.
1604 * @note If you want to scan bytes that may contain NUL values, then use
1605 * yy_scan_bytes() instead.
1606 */
1607 YY_BUFFER_STATE yy_scan_string (yyconst char * yystr )
1608 {
1609
1610 return yy_scan_bytes(yystr,strlen(yystr) );
1611 }
1612
1613 /** Setup the input buffer state to scan the given bytes. The next call to yylex() will
1614 * scan from a @e copy of @a bytes.
1615 * @param bytes the byte buffer to scan
1616 * @param len the number of bytes in the buffer pointed to by @a bytes.
1617 *
1618 * @return the newly allocated buffer state object.
1619 */
1620 YY_BUFFER_STATE yy_scan_bytes (yyconst char * yybytes, int _yybytes_len )
1621 {
1622 YY_BUFFER_STATE b;
1623 char *buf;
1624 yy_size_t n;
1625 int i;
1626
1627 /* Get memory for full buffer, including space for trailing EOB's. */
1628 n = _yybytes_len + 2;
1629 buf = (char *) yyalloc(n );
1630 if ( ! buf )
1631 YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
1632
1633 for ( i = 0; i < _yybytes_len; ++i )
1634 buf[i] = yybytes[i];
1635
1636 buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
1637
1638 b = yy_scan_buffer(buf,n );
1639 if ( ! b )
1640 YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
1641
1642 /* It's okay to grow etc. this buffer, and we should throw it
1643 * away when we're done.
1644 */
1645 b->yy_is_our_buffer = 1;
1646
1647 return b;
1648 }
1649
1650 #ifndef YY_EXIT_FAILURE
1651 #define YY_EXIT_FAILURE 2
1652 #endif
1653
1654 static void yy_fatal_error (yyconst char* msg )
1655 {
1656 (void) fprintf( stderr, "%s\n", msg );
1657 exit( YY_EXIT_FAILURE );
1658 }
1659
1660 /* Redefine yyless() so it works in section 3 code. */
1661
1662 #undef yyless
1663 #define yyless(n) \
1664 do \
1665 { \
1666 /* Undo effects of setting up yytext. */ \
1667 int yyless_macro_arg = (n); \
1668 YY_LESS_LINENO(yyless_macro_arg);\
1669 yytext[yyleng] = (yy_hold_char); \
1670 (yy_c_buf_p) = yytext + yyless_macro_arg; \
1671 (yy_hold_char) = *(yy_c_buf_p); \
1672 *(yy_c_buf_p) = '\0'; \
1673 yyleng = yyless_macro_arg; \
1674 } \
1675 while ( 0 )
1676
1677 /* Accessor methods (get/set functions) to struct members. */
1678
1679 /** Get the current line number.
1680 *
1681 */
1682 int yyget_lineno (void)
1683 {
1684
1685 return yylineno;
1686 }
1687
1688 /** Get the input stream.
1689 *
1690 */
1691 FILE *yyget_in (void)
1692 {
1693 return yyin;
1694 }
1695
1696 /** Get the output stream.
1697 *
1698 */
1699 FILE *yyget_out (void)
1700 {
1701 return yyout;
1702 }
1703
1704 /** Get the length of the current token.
1705 *
1706 */
1707 int yyget_leng (void)
1708 {
1709 return yyleng;
1710 }
1711
1712 /** Get the current token.
1713 *
1714 */
1715
1716 char *yyget_text (void)
1717 {
1718 return yytext;
1719 }
1720
1721 /** Set the current line number.
1722 * @param line_number
1723 *
1724 */
1725 void yyset_lineno (int line_number )
1726 {
1727
1728 yylineno = line_number;
1729 }
1730
1731 /** Set the input stream. This does not discard the current
1732 * input buffer.
1733 * @param in_str A readable stream.
1734 *
1735 * @see yy_switch_to_buffer
1736 */
1737 void yyset_in (FILE * in_str )
1738 {
1739 yyin = in_str ;
1740 }
1741
1742 void yyset_out (FILE * out_str )
1743 {
1744 yyout = out_str ;
1745 }
1746
1747 int yyget_debug (void)
1748 {
1749 return yy_flex_debug;
1750 }
1751
1752 void yyset_debug (int bdebug )
1753 {
1754 yy_flex_debug = bdebug ;
1755 }
1756
1757 static int yy_init_globals (void)
1758 {
1759 /* Initialization is the same as for the non-reentrant scanner.
1760 * This function is called from yylex_destroy(), so don't allocate here.
1761 */
1762
1763 (yy_buffer_stack) = 0;
1764 (yy_buffer_stack_top) = 0;
1765 (yy_buffer_stack_max) = 0;
1766 (yy_c_buf_p) = (char *) 0;
1767 (yy_init) = 0;
1768 (yy_start) = 0;
1769
1770 /* Defined in main.c */
1771 #ifdef YY_STDINIT
1772 yyin = stdin;
1773 yyout = stdout;
1774 #else
1775 yyin = (FILE *) 0;
1776 yyout = (FILE *) 0;
1777 #endif
1778
1779 /* For future reference: Set errno on error, since we are called by
1780 * yylex_init()
1781 */
1782 return 0;
1783 }
1784
1785 /* yylex_destroy is for both reentrant and non-reentrant scanners. */
1786 int yylex_destroy (void)
1787 {
1788
1789 /* Pop the buffer stack, destroying each element. */
1790 while(YY_CURRENT_BUFFER){
1791 yy_delete_buffer(YY_CURRENT_BUFFER );
1792 YY_CURRENT_BUFFER_LVALUE = NULL;
1793 yypop_buffer_state();
1794 }
1795
1796 /* Destroy the stack itself. */
1797 yyfree((yy_buffer_stack) );
1798 (yy_buffer_stack) = NULL;
1799
1800 /* Reset the globals. This is important in a non-reentrant scanner so the next time
1801 * yylex() is called, initialization will occur. */
1802 yy_init_globals( );
1803
1804 return 0;
1805 }
1806
1807 /*
1808 * Internal utility routines.
1809 */
1810
1811 #ifndef yytext_ptr
1812 static void yy_flex_strncpy (char* s1, yyconst char * s2, int n )
1813 {
1814 register int i;
1815 for ( i = 0; i < n; ++i )
1816 s1[i] = s2[i];
1817 }
1818 #endif
1819
1820 #ifdef YY_NEED_STRLEN
1821 static int yy_flex_strlen (yyconst char * s )
1822 {
1823 register int n;
1824 for ( n = 0; s[n]; ++n )
1825 ;
1826
1827 return n;
1828 }
1829 #endif
1830
1831 void *yyalloc (yy_size_t size )
1832 {
1833 return (void *) malloc( size );
1834 }
1835
1836 void *yyrealloc (void * ptr, yy_size_t size )
1837 {
1838 /* The cast to (char *) in the following accommodates both
1839 * implementations that use char* generic pointers, and those
1840 * that use void* generic pointers. It works with the latter
1841 * because both ANSI C and C++ allow castless assignment from
1842 * any pointer type to void*, and deal with argument conversions
1843 * as though doing an assignment.
1844 */
1845 return (void *) realloc( (char *) ptr, size );
1846 }
1847
1848 void yyfree (void * ptr )
1849 {
1850 free( (char *) ptr ); /* see yyrealloc() for (char *) cast */
1851 }
1852
1853 #define YYTABLES_NAME "yytables"
1854
1855 #line 63 "../../../usr.bin/m4/tokenizer.l"
1856
1857
1858
1859 int32_t
1860 number()
1861 {
1862 long l;
1863
1864 errno = 0;
1865 l = strtol(yytext, NULL, 0);
1866 if (((l == LONG_MAX || l == LONG_MIN) && errno == ERANGE) ||
1867 l > INT32_MAX || l < INT32_MIN) {
1868 fprintf(stderr, "m4: numeric overflow in expr: %s\n", yytext);
1869 }
1870 return l;
1871 }
1872
1873 int32_t
1874 parse_radix()
1875 {
1876 long base;
1877 char *next;
1878 long l;
1879
1880 l = 0;
1881 base = strtol(yytext+2, &next, 0);
1882 if (base > 36 || next == NULL) {
1883 fprintf(stderr, "m4: error in number %s\n", yytext);
1884 } else {
1885 next++;
1886 while (*next != 0) {
1887 if (*next >= '0' && *next <= '9')
1888 l = base * l + *next - '0';
1889 else if (*next >= 'a' && *next <= 'z')
1890 l = base * l + *next - 'a' + 10;
1891 else if (*next >= 'A' && *next <= 'Z')
1892 l = base * l + *next - 'A' + 10;
1893 next++;
1894 }
1895 }
1896 return l;
1897 }
1898
1899
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